In the circuit of figure, the switch is closed at t = 0. At t = 0+ the current t

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Electronics and Communication Engineering ‣ Networks Analysis and Synthesis See What Others Are Saying!

Question
In the circuit of figure, the switch is closed at t = 0. At t = 0⁺ the current through C is
Options
A. 4 A
B. 2.5 A
C. 3.1 A
D. 0

Correct Answer

4 A

Explanation

Capacitor behaves as a short-circuit at t = 0.

More questions

4. Consider the probability density f(x) = ae^-b|x| where x is a random variable whose allowable values range from x = - ? to x = + ?. P(1 ? x ? 2)
Options
A.
B.
C.
D. (e^-b - e^-2b)

6. The number of turns in a coil is doubled. If initial time constant is T, the new time constant is
Options
A. T
B. 2T
C. 4T
D.

10. In envelope detection of an AM waveform
Options
A. One side band and full-ampiitude carrier are needed
B. Both side bands and full-amplitude carrier are needed
C. Only two side bands are needed
D. Upper side band and part of carrier are needed

Comments

There are no comments.

More in Electronics and Communication Engineering: